Epsom Salt is just the best thing that I can give my flowers and roses that are perennials. It helps then through the winter and really does give them a better bloom in the Spring. I actually do this once a money. I just put down a 1/2 to 1 cup of epsom salt once a month and it is just so much eaier and so much less costly than spending all that money on fertilizer that sometimes does not even do the trick. Try Epsom salt first…may save you money!!